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Central Regional Air Planning Association (CENRAP):
CENRAP was one of the five Regional Planning Organizations in the U.S. to assist states and tribes develop regional haze state/tribe implementation plans. In addition to states and tribes in the nine states of Arkansas, Iowa, Kansas, Louisiana, Minnesota, Missouri, Nebraska, Oklahoma, and Texas, CENRAP's membership included federal agencies and other interested parties. CENRAP is no longer active and the website is not accessible. For information regarding CENRAP reports, please call 405-813-4301.